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Let $ X$ , $ Y$ be two independent random variables with $ N(0,1)$ distribution. How can I find the following conditional expected value $ $ \mathbb{E}(X | X^2 + Y^2)?$ $Read more

Alguém sabe como resolver esse erro? Não sei o motivo, meu projeto estava normal, mas deu queda de energia e o pc desligou direto, após isso não consigo mais executa-lo no celular, ocorre esse erro aí: Error:Execution failed for task ‘:app:transformClassesWithInstantRunForDebug’. java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1 path $Read more

What is the expected global clustering coefficient $ \mathbb{E}[C_{GC}]$ for the Erdős–Rényi random graph $ \mathcal{G}(n,p)$ (expectation is over the ensemble of all Erdős–Rényi random graph) as $ n \rightarrow \infty$ and $ p$ fixed? The global clustering coefficient $ C_{GC}$ is defined as $ C_{GC}={\frac {3\times {\mbox{number of triangles}}}{{\mbox{number of connected triplets of vertices}}}}={\fracRead more

Assume that $ X$ and $ Y$ are two arbitrary non-negative random variables with joint probability math function $ p(x,y)$ . Is the following inequality true for $ \alpha\geq 1$ ? \begin{align} \left(\mathbb{E}\left[X^\alpha\right]-\mathbb{E}\left[X\right]^\alpha\right)^{\frac{1}{\alpha}}+\left(\mathbb{E}\left[Y^\alpha\right]-\mathbb{E}\left[Y\right]^\alpha\right)^{\frac{1}{\alpha}}\geq \left(\mathbb{E}\left[(X+Y)^\alpha\right]-\left(\mathbb{E}\left[X+Y\right]\right)^\alpha\right)^{\frac{1}{\alpha}} \end{align}Read more

I’m in the process of trying to import an existing paper wallet BTC private key into a Bitcoin Gold node I setup so that I can grab the BTG that was airdropped there, however whenever I try to importprivkey the public address associated doesn’t match what I had generated, and there are no funds thereRead more

Доброго времени суток! Столкнулся с такой проблемой: TypeError: one character string expected Ругается вот на эту строку: v1 = Array(‘c’, ‘name1’) где Array – это: from multiprocessing import Array За образец брал пример отсюда: s = Array(‘c’, ‘hello world’, lock=lock) Пробовал менять ‘c’ на c_char (насколько я понял, ‘c’ – это какое-то сокращенное указание наRead more

We have the following SharePoint IndexerInfo.exe output (the “status” does change between the idle, indexing, indexing (x%) statuses) but we’re trying to figure out how do we identify when an index is complete… obviously an index will never be complete if crawls re-occur (which ours do, around every 20 minutes incremental). We have a customRead more

en este progarama con templates, se quiere obtener el valor absoluto, para cualquier tipo de data numerica , y se obtiene el error: 23 35 C:\Users\Usuario\Documents\main.cpp [Error] expected unqualified-id before ‘{‘ token esto se refiere ala linea: void mostrarABS(TIPOD numero);{ cualquier ayuda se agradece! include // Plantilla en C++ Clase 64 Proyecto: PERU using namespaceRead more

Disclaimer: I am a research mathematician, but not an algebraic geometer, and so I don’t know if this is a good question. I welcome advice for improving it and/or better tags. Let $ K$ be an infinite field (I’m imagining $ K=\mathbb{C}$ ). Let $ P_1, \dots, P_n$ be polynomials in $ K[t_1,\dots, t_k, x_1,\dots,x_m]$Read more

I’m using Solve to find the time t for t==distance/speed, yet when I verify if t*speed == distance, I’m getting False… Am I doing something wrong? Here’s my code and the output: distance = Sqrt[(L + v*t)^2 + x^2]; speed = cmedium; t11s = Solve[t == distance/speed, t]; (* choose the positive root *) t11Read more